DESCRIPTION
The combination meter assembly receives vehicle speed signals from the skid control
ECU via the CAN line. The vehicle speed sensor detects the voltage that varies according
to the vehicle speed. The skid control ECU supplies power to the vehicle speed sensor.
The skid control ECU detects vehicle speed signals based on the pulses of the voltage.
WIRING DIAGRAM
PROCEDURE
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1.
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CHECK CAN COMMUNICATION SYSTEM
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(a) Check if a CAN communication system DTC is output (See page
 ).
Result
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Result
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Proceed to
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CAN communication system DTC is not output
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A
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CAN communication system DTC is output
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B
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| B |
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GO TO CAN COMMUNICATION SYSTEM
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| A |
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2.
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CHECK SFI SYSTEM (VEHICLE SPEED)
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(a) Check if a SFI system DTC is output.
- for 1UR-FE (See page )
- for 3UR-FE (See page )
- for 3UR-FBE (See page )
Result
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Result
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Proceed to
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SFI system DTC is not output
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A
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SFI system (for 1UR-FE) DTC is output
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B
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SFI system (for 3UR-FE) DTC is output
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C
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SFI system (for 3UR-FBE) DTC is output
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D
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| B |
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GO TO DIAGNOSTIC TROUBLE CODE CHART
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| C |
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GO TO DIAGNOSTIC TROUBLE CODE CHART
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| D |
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GO TO DIAGNOSTIC TROUBLE CODE CHART
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| A |
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|
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3.
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PERFORM ACTIVE TEST USING TECHSTREAM (SPEEDOMETER)
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(a) Operate the Techstream according to the display and select "Active Test"
(See page ).
Combination Meter:
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Tester Display
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Test Part
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Control Range
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Diagnostic Note
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Speed Meter Operation
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Speedometer
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0, 40, 80, 120, 160 or 200
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Acceptable range (km/h or mph): [Control range → Speedometer display]
for mph
- 40 mph → 39.3 to 42.1 mph
- 80 mph → 79.8 to 84.3mph
for km/h
- 40 km/h → 38.5 to 43 km/h
- 80 km/h → 78.9 to 83.9 km/h
- 120 km/h → 119.6 to 124.6 km/h
- 160 km/h → 160.3 to 165.3 km/h
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OK:
Needle indication is normal.
HINT:
- Confirm that the vehicle is stopped and engine is idling. It is normal that
door will be locked automatically when performing the speedometer Active Test.
- The displayed value has the same units (km/h, mph) as the main scale of
the vehicle's speedometer.
- The needle position should be within the acceptable tolerance.
| NG |
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REPLACE COMBINATION METER ASSEMBLY
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| OK |
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|
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4.
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READ VALUE USING TECHSTREAM (VEHICLE SPEED)
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(a) Operate the Techstream according to the display and select "Data List" (See
page ).
Combination Meter:
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Tester Display
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Measurement Item/Range
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Normal Condition
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Diagnostic Note
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Vehicle Speed Meter
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Vehicle speed/Min.: 0 (0), Max.: 255 (158)
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Almost same as actual speed (when driving)
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Unit: km/h (mph)
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OK:
Vehicle speed displayed on Techstream is almost the same as actual vehicle speed
measured using speedometer tester (calibrated chassis dynamometer).
| OK |
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REPLACE COMBINATION METER ASSEMBLY
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| NG |
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|
|
|
5.
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READ VALUE USING TECHSTREAM (WHEEL SPEED SENSOR)
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(a) Operate the Techstream according to the display and select "Data List" (See
page ).
ABS/VSC/TRAC:
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Tester Display
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Measurement Item/Range
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Normal Condition
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Diagnostic Note
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FR Wheel Speed
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Front wheel speed sensor RH reading
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)
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Actual wheel speed
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Similar speed as indicated on speedometer
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FL Wheel Speed
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Front wheel speed sensor LH reading
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)
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Actual wheel speed
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Similar speed as indicated on speedometer
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RR Wheel Speed
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Rear wheel speed sensor RH reading
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)
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Actual wheel speed
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Similar speed as indicated on speedometer
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RL Wheel Speed
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Rear wheel speed sensor LH reading
Min.: 0 km/h (0 mph), Max.: 326 km/h (203 mph)
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Actual wheel speed
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Similar speed as indicated on speedometer
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OK:
Vehicle speed displayed on Techstream is almost the same as actual vehicle speed
measured using speedometer tester (calibrated chassis dynamometer).
| OK |
|
REPLACE COMBINATION METER ASSEMBLY
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| NG |
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REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)
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